ARM: tegra: trimslice: Add CPU Operating Performance Points

Utilize common Tegra20 CPU OPP table. CPU voltage scaling is available
now on TrimSlice.

Tested-by: Nicolas Chauvet <kwizart@gmail.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>